implantation pain?

Ok with my last baby I definitely had implantation pain. Sharp pain in my left side of my uterus that lasted a few minutes. I'm 6 days past the last day of my fertile window and today I had an overwhelming pain in my right side of my uterus but it wasn't sharp it was a dull aching pain and it only lasted a few minutes. Can implantation pain feel different or does it always feel the same? What did your implantation pain feel like? Edit: I did not have implantation bleeding last time around.